SEAL-O-RING 3E6747 - Caterpillar

Engine: Commercial
3500B and 3500C High DisplacementEngine News SEBD9375, 21 November 2005, "New Connecting Rod is Now Used". The original article has been revised because the connecting rod that was originally announced has been replaced.Description of Change: The connecting rod has a drilled oil passage that supplies pressurized oil to the piston pin and to the connecting rod bearing. In the new connecting rod, the drilled oil passage is chamfered at both ends. The chamfers help to ensure cleanliness of the oil passage and provide a smoother fit for the main bearing and for the piston pin bearing.Adaptable To: The new 381-6555 Rod As replaces the 230-2516 Rod As, which is canceled.
Illustration 1 g02727433
Chamfer at the piston pin end of the drilled oil passage in the connecting rodThe drilled oil passage also has a chamfer at the main bearing end of the connecting rod.The new 381-6555 Rod As is adaptable to 3500B and 3500C High Displacement Engines back to first production.The new 381-6555 Rod As is effective with the serial numbers that are listed in Table 2.The old connecting rod and the new connecting rod can be mixed in the same engine.
Table 1
Part Numbers for the Connecting Rod    
Old Part Numbers     New Part Numbers     Description    
160-5910     253-3066     Piston and Rod Gp    
230-2516     381-6555     Rod As    
107-7330     230-2520     Connecting Rod Bearing    
Table 2
Effective Serial Numbers    
S/N:TTF00450    
S/N:PES00534    
S/N:R1S00785    
S/N:SBK01251    
S/N:NJT00195    
S/N:TTF00203    
S/N:TTG00263    
S/N:TTH00379    
S/N:TTJ00338    
S/N:TTF00459    
S/N:JTS00281    
S/N:LLF00430    
S/N:YAW00316    
S/N:R1A01179    
S/N:2EZ00375    
S/N:2JW00422    
S/N:4BW00590    
S/N:5AW00140    
S/N:B5G00102    
S/N:BCK00374    
S/N:BRN00196    
S/N:CDE00313    
S/N:F2X00209    
S/N:GAR00203    
S/N:GZT00157    
S/N:TTK00101    
S/N:MKH00267    
S/N:MLM00158    
S/N:MRG00103    
S/N:PAG00481    
S/N:PRC00102    
S/N:PWG00231    
S/N:S2H00570    
S/N:S2J00758    
S/N:S2K00354    
S/N:S2N00130    
S/N:S2T00112    
S/N:S2X01685    
S/N:S2Z00433    
S/N:SBM00158    
S/N:SCJ00114    
S/N:SCK00120    
S/N:SDX00108    
S/N:SLM00317    
S/N:ZAR00769